Optimization of loop heat pipe heat transfer performance using self-adaptive porous structures

设计并评价了双蒸发器环路热管的性能。采用聚四氟乙烯膜作为芯材。阐明了LHP在不同方向上的运行特点。讨论了气液两相分布对热泵性能的影响。其中一篇文章发表在一篇影响力很大的期刊上。然而，由于聚四氟乙烯的结构，其孔径变化范围有限。提出了一种具有开孔泡沫结构和超亲水性的新型泡沫材料--三聚氰胺泡沫塑料。三聚氰胺泡沫的孔径控制在215微米到18微米之间，孔隙率和渗透率变化很小。三聚氰胺原型表现出比PTFE LHP更好的性能。

We designed, evaluated performance of the dual-evaporator loop heat pipe (LHP). PTFE membranes were used as wick. Operating characteristics of the LHP in various orientations was clarified. Effect of vapor/liquid distribution in reservoirs on the performance was discussed. One article was published on a high impact journal.However, the pore size variation range of PTFE wick was limited due to its structure. Melamine foam, a novel material with open foam structure and superhydrophilicity which has not been used so far, was proposed. Pore size of melamine foam was controlled from 215 micron to 18 micron with very small changes in porosity and permeability. The melamine prototype exhibited better performance than the PTFE LHP.